My roommate and i have had this argument for years. I have read the Apple website and they say that if you have a quad core and you are not always using all four cores it will shut down the cores you are not using and speed up the ones still being used. So here is my question. If i get the new mac pro with the 2.93Ghz quad core then that means the max that each core can go is .73Ghz. Is that correct????? Or is it possible that the cores can each go the max 2.93Ggz????? Because if the max that one core can go is .73Ghz than it makes more sense to get a dual core with the same kind of spec's on the overall processor. Help please. I hope this maxes sense.